Recs.
Updated
MatLab and its programming language has many libraries and APIs dedicated to statistics, and is a great environment that provides a very integrated experience.
SpecsUpdate
Pros
Pro Matlab is the industry standard for technical computing and it is developed to be easy and complete
Despite having a simplified C-Like syntax, there are no burdens like include headers, function declarations, pointers, and many other nuances (for the beginner) of the C language. It is more like a script.
It is actually a ready to use toolset(s) (a plethora of toolboxes) with all the functions that are necessary in many fields of science and engineering.
Cons
Con Despite being a technical computing mathematical language, typesetting cannot be used for the actual programming.
Unlike Wolfram Mathematica, and mapple, the functions are specified in plain text not in typesetting which makes it hard to read, or mantain, when it is about many equations. (the equations can be displayed in typesetting in a notebook but not in an executable file).